DUPLICITY. 37 



been mistaken for a nipple, and hence the foetus was er- 

 roneously described as a female. The generative organs 

 are those of an imperfect male, consisting of a rudimentary 

 penis invested by a very voluminous circular prepuce. 



The fun is is short and thick, and when recent the foetus 

 was covered with sebaceous secretion. 



Presented by N. Higkmore, Esq. 



C. By Adhesion. 



This is a much less intimate mode of union, and probably takes 

 place at a much later stage of development. It occasionally 

 happens that both foetuses are well developed, especially when they 

 adhere by the skulls, the brains and their membranes remaining 

 separate ; much more frequently one foetus is very defective ; it 

 often forms a mere tumour, especially when adherent to the 

 nates of the other. 



a. Craniopagus. 



138. The skull of a Bengalee child, with a second imperfect skull 

 attached to the anterior fontanelle, which is widely ex- 

 tended. The base of the second skull is much contracted, 

 the foramen magnum being almost closed. All the bones 

 of the face are much smaller than those of the supporting 

 skull. The faces are turned in almost opposite directions, 

 so that the left frontal bones of one skull articulate by 

 suture with the right parietals of the other, and vice versa. 



The history of this skull and an account of the child are given 

 in the Phil. Trans, vol. Ixxx. p. 296, from which the following 

 particulars are extracted : 



The child was a male, it was more than four years old at the 

 time of its death, which was caused by the bite of a cobra. It was 

 very emaciated, a fact attributed to the parents having used it as 

 a show, always keeping it covered up, except when payment was 

 made for its exhibition. The woman who acted as midwife was 

 terrified at the appearance of the additional head, and tried to de- 

 stroy the child by throwing it on the fire : it was rescued after 

 one eye and ear were considerably burnt. 



There was no trunk to the second head ; but it was surmounted 

 by a short neck terminating in a rounded tumour, which is stated 

 by one observer to have been quite soft at the age of two, and 

 by another to have been quite hard and cartilaginous at the age of 

 four. Its external ears were represented by mere folds of skin, and 



